摘要
利用改进的直接剪切设备,进行了钢结构-厦门标准砂在不同粗糙度下的界面剪切试验,分析了其界面剪切应力应变关系,界面抗剪强度的分析以及对界面剪切应力应变关系进行数学拟合。结果表明:对于同一种粗糙界面,随着法向应力增大,剪切应力并逐渐增大;对于同一法向应力条件下,粗糙度大的界面抗剪强度大;硬化阶段采用对数函数,软化阶段采用常数合理,拟合效果良好。
This paper uses the improved direct shear equipment to carry out the interface shearing test of steel structure-Xiamen standard sand at different roughness degrees,analyzes the interface shear stress strain relationship,analyzes the interface shear strength,and mathematically fits the interface shear stress strain relationship.The results show that:for the same rough interface,with the increase of normal stress,the shear stress increases gradually,the shear strength of the interface with large roughness is great under the same normal stress condition,the argumentation stage adopts the number of arguments function,the softening stage adopts the constant and the fitting effect is good.
作者
荣文涛
RONG Wentao(Shandong Transport Vocational College,Shandong Weifang 261206 China)
关键词
剪切应力
剪切位移
等效摩擦角
对数函数
常数
shear stress
shear displacement
equivalent friction angle
dating function
constant
